Been on sertraline/Zoloft about 7 weeks. Feel more anxious?

Hi all

After about 3-4 weeks on this medication mentally I felt clearer/happier. However I’ve noticed every day for the last couple weeks I feel like my heart is racing and I have anxiety in my chest. Almost like my head is more clear but my body is anxious AF, even though I feel like I’m not worrying about anything. Kinda frustrated because I was told the anxiety would take 4-6 ish weeks to go and welll..nope. I’m on 50mg. Do you think trying a higher dose would help if make it worse? Thanks!