Question about curving

I’ve started using a vacuum pump to help with ED. My current routine is to pump for one week- every other day for about 30 min or more- then rest one week.
While I have noticed an improvement with erections, I’ve developed an upward curve which I never had before. There is a noticeable swelling on the underside from the halfway point forward which causes my penis to curve up. There is no pain or discomfort.
This curve is not noticeable while pumping and only appears during normal erections. Since I’m relatively new to pumping I was wondering if this has been discussed before. I was unable to find any references doing a search of this site.
Thanks

Marriedct