Should I just buy some pepper spray and go?

I'm tired of being at home. The weather is actually 'nice' for a change as we've been in the triple digits for weeks.Theres a nice park by the river but I don't want to drive to it. Down town is nice however, being a lone female, I don't feel safe.
Maybe I should just buy some pepper spray and go?

It's 2pm btw. I"m not gonna go during the night alone.