Pregnant or Irregular?

Stopped taking birth control a month ago because I really felt it was messing with my mood and my period (it would last a day rather than the normal 3 to 4 days). For the past month we've been intimate with no protection countless times saying "if it's God's plan for us to get pregnant then we are blessed". I am now a week late, my heartrate spikes quickly as I get up to do things, hot flashes, bloating in the evening, congested, instantly feling like I have to pee again after using the bathroom and jittery after drinking my morning coffee. My boyfriend thinks it's just the affects of coming off of birth control, but I'm starting to question it all. I had a miscarriage in 2020 at 14 weeks. The first sign I was pregnant before my bfp was my heartrate would spike just walking to the car. Thoughts?