An hour or so after I had sex with my husband I went to use the restroom and noticed I had white thick clumpy discharge on my underwear. Sometimes my husband has it over his penis after intercourse. Is this normal? Also, we are trying to get pregnant so we don't use any protection.

Yes, its normal. Probably close to your menstruation time, right? It is a normal secretion as long as it does not have an odour, or is coloured anything but white.