Almost fainted during donations yesterday. Can I ever go back?

Hi so yesterday I think I didn’t eat enough or something but essentially towards the end of my donation I started panicking because I felt super sick I was at 94 and was going to “thought it out” but my vision went blurry and I felt myself not being super conscious. They stopped me and were very kind but I feel so embarrassed, I am currently in the process of losing some weight and maybe I underestimated how hard in my body it can be. Is this embarrassing enough to need to find a new center? They were all so kind but I’m so ashamed and anxious to go back now.