Female tarantula unreceptive after a single copulation, why?

So, my hobby has grown substantially and so I thought I'd try to breed. Got a gorgeous male copper morph rosie for my two rosie girls. He refused to mate with one (she's massive and I think scared him) at first, took right to the second girl, and then was very happy to, within a day or two I believe, mate with the larger female.

I don't think a sperm web was made between both matings, however, since mating with each the first time, neither female is respective anymore. The larger, more gentle one sort of throws him away and spooks him off, threatens him. The smaller, much more aggressive one will try to attack him. The last attempt I made at putting them together almost resulted in his demise, so I haven't made another attempt in weeks and have decided to just enjoy his beautiful splendor until he kicks the bucket. Even though I wasn't able to get anyone to mate a second time, several good insertions were made by both palps for both girls.

His behavior after mating changed too. He's not running around anymore, he's not trying to escape his enclosure constantly anymore. I realize he's apt to die soon, but he began to behave this way the day after mating with my second rosie, so it was surprising.

I guess I was wondering, since they are both suddenly aggressively unreceptive where as before they pretty much walked up to him and got in position, would they likely be pregnant?