health issues!!

I just got a new albino ball python Dec 20 and I'm very parinoid...I'm thinking of the worst...and its hurting me pretty bad, I'm very stressed out.... how noticeable is mouth rot?? and my snake keeps trying to "climb" the tank walls at night...i think he has a RI, trying to move the mucus down, there are no visible signs to me ..no bubbles nor do i hear wheezing or a cough... there are these streaks on the glass,they are not gooey, more toward the bottom area...I'm thinking they're from after he takes a drink...then again I'm not sure, thats what I WANT it to be from...I'm just very scared.....also when i bought him, the guy said he ate the sat prior to me purchasing him, so when should i try to feed him???...i checked his mouth for discoloration but i didn't know exactly what I was looking for...to me it looked a healthy pinkish color nothing looked damaged in any way.... i will make a trip to the vet if i have to...im poor so i really don't want to go if i don't have to...but if i NEED to i will go ASAP...I've been watching him the past few days very closely... I want this little dude to be around forever and I've been trying so hard to maintain temps and humidity... I'm so sad please help!! ....temps are 92-83 ambient at 80 and humidity at 53-55%

Please post of picture of him for the mouth rot. You temps and humidity sound fine. If you don't see any bubbles or hear any wheezing, then he probably does not have RI. BTW, you should save up a vet visit amount to be used in the future if need be. If he ever gets sick, you will have the funds to take him right away.

mine climbs the walls when hungry. I tried waiting that week to let it settle in before feeding it, then gave up. After three nights she was going all over the place in the cage so I "broke the rule" and fed her. She then went back to her hide and relaxed