Cramping/burning/feeling weird

Hi everyone! I'm two weeks into being 42 and three days before Hurricane Irma hit my house I found out I was pregnant. Needless to say I was shocked! We already have 7 kids between us, 5 that I've given birth to and we have also lost a son at 16 weeks so i have worried through every single pregnancy.

My issue is this, since I found out I was pregnant i have had a burning sensation in my lower abdomen as well as slight cramping. I also have had bright red bleeding after having sex with my husband twice so I've decided no more sex until I see the doctor.

I had some pink when I wiped last night after being on my feet for about four hours and started crying. There has been brown when I wipe since. I know I shouldn't worry but I honestly can't remember if this has happened with my other pregnancies and feel like an idiot. My first ob visit isn't until October 13. Any suggestions? Comments? Worries?

I just moved to Florida in June and this will be my first visit ever with this ob. Should I be worried? Sorry for the book lol