POTS always has to ruin things for me..

I’m 36 weeks pregnant and working on a baby blanket I’m crocheting for my son and some days I don’t have the energy to do it but today I really wanted to. I set my daughter up on the laptop to play Roblox and my son was watching her play, so I put on the office for background noise and I was sitting on my couch working on my blanket. It lasted all but 10 minutes before I just couldn’t take the palpitations and shortness of breath anymore. I could feel myself getting shaky. I tried to take deep breaths but my heart rate just wouldn’t drop under 130bpm. There’s a heat wave here today and even tho my house is completely cool I feel like the humidity is affecting me. I gave up on crocheting and took two vitassium pills. Now I’m laying down and I guess I’ll just scroll endlessly on my phone since sitting and standing isn’t in the cards for me today.. I’m so frustrated by this.. I just want to crochet..