Funky smell

✨Izzi✨ • in a relationship // plan to be child free.
So I noticed that after my boyf and i have sex, when I'm wiping after, what comes out is a pale yellowy colour and has a strong foul smell recently. I don't think there's anything wrong with me but boyfriend has a doctors appointment in 3.5 weeks to see if there is anything going on with him. 
Problem is, we decided that it is best not to have sex until after we know what's going on... It's not been that long yet but we're going crazy! I really hope there is no issue (he's going to be in and out of the hospital a bit in the next couple months anyway so I don't want anymore health worries...